# How can I determine the manufacturer date on my gel battery

**URL:** <https://community.victronenergy.com/t/how-can-i-determine-the-manufacturer-date-on-my-gel-battery/5355>\
**Category:** DIY\
**Tags:** backup, agm\_battery, expert, victron\_community\
**Created:** [27 September 2024 08:07 UTC](https://community.victronenergy.com/t/how-can-i-determine-the-manufacturer-date-on-my-gel-battery/5355 "2024-09-27T08:07:11Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![Carlos](https://avatars.discourse-cdn.com/v4/letter/c/ecae2f/32.png) [@Carlos](https://community.victronenergy.com/u/Carlos)\
**Post date:** [27 September 2024 08:07 UTC](https://community.victronenergy.com/t/how-can-i-determine-the-manufacturer-date-on-my-gel-battery/5355/1 "2024-09-27T08:07:11Z")

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![IMG_20240927_092907_157](https://europe1.discourse-cdn.com/victron/original/2X/6/6b94ca119d4a59b02a0b3931239c9bfcf994448b.jpeg)

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**Author:** ![alexpescaru](https://dub1.discourse-cdn.com/victron/user_avatar/community.victronenergy.com/alexpescaru/32/270_2.png) [@alexpescaru](https://community.victronenergy.com/u/alexpescaru)\
**Post date:** [27 September 2024 12:00 UTC](https://community.victronenergy.com/t/how-can-i-determine-the-manufacturer-date-on-my-gel-battery/5355/2 "2024-09-27T12:00:34Z")

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After HQ you have 4 digits: HQ **YYWW** …  
YY - year  
WW - week of the year.  
Begining of April 2019.

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**Author:** ![system](https://europe1.discourse-cdn.com/victron/original/1X/21a9a7b5db7c6339715f993568736a7053199995.png) [@system](https://community.victronenergy.com/u/system)\
**Post date:** [11 October 2024 12:00 UTC](https://community.victronenergy.com/t/how-can-i-determine-the-manufacturer-date-on-my-gel-battery/5355/3 "2024-10-11T12:00:35Z")

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